This is how we add
Since our denominators match, we can add the numerators.
2 + 2 = 4
This yields the answer
The last step is to reduce the fraction if we can.
To find out, we try dividing it by 2...
Nope. Try the next prime number, 3...
Nope. Try the next prime number, 5...
No good. 5 is larger than 4. So we're done reducing.
Congratulations! Here's your final answer to 2/3 + 2/3